A COSPLAY fan is making Harry Potter fans do a double take – as she looks just like Hermione Granger.

You could be forgiven for thinking Megan Flockhart has mastered the art of concocting polyjuice potion, which allows the drinker to assume the form of someone else in author JK Rowling’s magical world.

But the Glaswegian claims she never realised she looked like actress Emma Watson’s character – until she dressed up as the brainy witch for a Halloween party last year.

Glasgow girl Megan Flockhart who is a dead ringer for actress Emma Watson.